This invoker Class Acts article allows invokers to strengthen the connection with their respective deity by picking up Awaken God Fragment, a nifty paragon feat that gives you a few constant benefits in addition to augmenting your encounter and daily prayers.
The constant benefits are about what I’d expect for a typical heroic feat: +2 to a pair of skills, allow allies to reroll saves against specific conditions, or even a single skill bonus plus something else (like resist cold temps as if you were always under an Endure Elements ritual). I think the shittiest one is fragment of Sehanine, which gives you a +2 feat bonus to Stealth. Yawn.
On the other hand, the encounter-based benefits can be kind of nice. Fragment of Corellon lets you or an adjacent ally teleport when you use an encounter/daily prayer, while fragment of Avandra lets an ally make a free save (two against certain conditions). I think one of the sweetest ones is fragment of Ioun, which lets you reroll any damage dice once.
There’s one fragment per “core” deity, but none of the evil ones.
Awful Good Games 